// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <pollux/buffer/string_view_buffer_holder.h>
#include <pollux/buffer/buffer.h>
#include <pollux/common/strings/string_view.h>

namespace kumo::pollux {
    StringView StringViewBufferHolder::getOwnedStringView(
        const char *data,
        int32_t size) {
        if (stringBuffers_.empty() ||
            stringBuffers_.back()->size() + size >
            stringBuffers_.back()->capacity()) {
            stringBuffers_.push_back(AlignedBuffer::allocate<char>(
                std::max(size, kInitialStringReservation), pool_));
            stringBuffers_.back()->setSize(0);
        }
        auto stringBuffer = stringBuffers_.back().get();
        char *newPtr = stringBuffer->asMutable<char>() + stringBuffer->size();
        memcpy(newPtr, data, size);
        stringBuffer->setSize(stringBuffer->size() + size);
        return StringView(newPtr, size);
    }

    StringView StringViewBufferHolder::getOwnedStringView(StringView stringView) {
        if (stringView.isInline()) {
            return stringView;
        }
        return getOwnedStringView(stringView.data(), stringView.size());
    }
} // namespace kumo::pollux
